3/4 + 2 1/2 + 4 1/4 porfavor ayudaaa

7 1/2

Step-by-step explanation:

3/4 + 5/2 + 17/4

3/4 + 10/4 + 17/4

13/4 + 17/4

30/4

7 2/4

7 1/2

whatever you can spend with $11.53 or under.

step-by-step explanation:

20 - 8.47 = 11.53. take away the money he used for lunch from the starting amount of 20.

fahrenheit

step-by-step explanation:

fahrenheit is more precise than celsius. the ambient temperature on most of the inhabited world ranges from -20 degrees fahrenheit to 110 degrees fahrenheit—a 130-degree range. on the celsius scale, that range is from -28.8 degrees to 43.3 degrees—a 72.1-degree range. this means that you can get a more exact measurement of the air temperature using fahrenheit because it uses almost twice the scale.